package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 使用块读写
 */
public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("qq.jpg");
        FileOutputStream fos = new FileOutputStream("qq_cp1_png");
        int len =0;
        long start = System.currentTimeMillis();
        byte[] data = new byte[1024*10];
        while ((len=fis.read(data))!=-1){
//            fos.write(data);
                fos.write(data,0,len);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完成，耗时:"+(end - start)+"ms");
        fis.close();
        fos.close();


    }
}
